How to set the environmental variable LD LIBRARY PATH in linux

Question

I have first executed the command  export LD LIBRARY PATH  usr local lib  Then I have opened  bash profile file  vi    bash profile  In this file  I put   LD LIBRARY PATH  usr local lib export LD LIBRARY PATH   Then if the terminal is closed and restarted  typing echo  LD LIBRARY PATH displays no result   How to set the path permanently

User · Answer

Keep the previous path  don t overwrite it   export LD LIBRARY PATH  LD LIBRARY PATH  your custom path    You can add it to your    bashrc   echo  export LD LIBRARY PATH  LD LIBRARY PATH  your custom path    gt  gt     bashrc

User · Answer

You should add more details about your distribution  for example under Ubuntu the right way to do this is to add a custom  conf file to  etc ld so conf d  for example  sudo gedit  etc ld so conf d randomLibs conf   inside the file you are supposed to write the complete path to the directory that contains all the libraries that you wish to add to the system  for example   home linux myLocalLibs   remember to add only the path to the dir  not the full path for the file  all the libs inside that path will be automatically indexed   Save and run sudo ldconfig to update the system with this libs

User · Answer

Go to the home folder and edit  profile Place the following line at the end   export LD LIBRARY PATH  lt your path gt  Save and Exit  Execute this command  sudo ldconfig

User · Answer

Put export LD LIBRARY PATH  usr local lib in    bashrc  preferably towards end of script to avoid any overrides in between  Default    bashrc comes with many if-else statements   Post that whenever you open a new terminal konsole  LD LIBRARY PATH will be reflected

User · Answer

I do the following in Mint 15 through 17  also works on ubuntu server 12 04 and above   sudo vi  etc bash bashrc    scroll to the bottom  and add   export LD LIBRARY PATH     All users have the environment variable added

User · Answer

For some reason no one has mentioned the fact that the bashrc needs to be re-sourced after editing  You can either log out and log back in  like mentioned above  but you can also use the commands  source    bashrc or      bashrc

User · Answer

You could try adding a custom script  say  myenv vars sh in  etc profile d    cd  etc profile d sudo touch myenv vars sh sudo gedit myenv vars sh   Add this to the empty file  and save it   export LD LIBRARY PATH  usr local lib   Logout and login  LD LIBRARY PATH will have been set permanently

User · Answer

Add      LD LIBRARY PATH   path you want1  path you want 2    to  etc environment  See the Ubuntu Documentation   CORRECTION  I should take my own advice and actually read the documentation   It says that this does not apply to LD LIBRARY PATH  Since Ubuntu 9 04 Jaunty Jackalope  LD LIBRARY PATH cannot be set in  HOME  profile   etc profile  nor  etc environment files  You must use  etc ld so conf d  conf configuration files    So user1824407 s answer is spot on

User · Answer

Alternatively you can execute program with specified library dir    lib ld-linux so 2 --library-path PATH EXECUTABLE   Read more here

User · Answer

The file  bash profile is only executed by login shells  You may need to put it in    bashrc  or simply logout and login again

[linux] How to set the environmental variable LD_LIBRARY_PATH in linux

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